Programmer Think

*** Class definitions and class members Define a class: class Box { private: double length; // Length of a box double breadth; // Breadth of a box double height; // Height of a box public: double getArea(); }; The defined class has the following properties: class name, class members (including da ...

Why use concurrenthashmap (the disadvantage of HashMap) HashMap is the most commonly used Map class in Java. It has good performance and fast speed, but it can not guarantee thread safety. It can use null value as Key/value The thread insecurity of HashMap is mainly reflected in the dead loop when resizing and fast fail when using iterator In ...

Interface: API (Application Programming Interface) refers to some pre-defined interfaces (such as function and HTTP interface), or refers to the Convention for the connection of different components of the software system. It is used to provide a set of routines that can be accessed by applications and developers based on some software or h ...

(1) As long as a person doesn't give up himself, the whole world won't give up you (2) I was born to be of great use (3) If you can't bear the pain of learning, you must bear the pain of life. This is a painful and profound understanding (4) Hard work pays off (5) Spirit is the real blade (6) Defeat your opponent twice, the first in your heart ...

Kubernetes, abbreviated as K8s, is an abbreviation of 8 characters instead of "ubernet". Kubernetes is an open source application for managing containerized applications on multiple hosts in the cloud platform. Kubernetes aims to make the deployment of containerized applications simple and efficient. Kubernetes provides a mechanism fo ...

Reptile experience sharing The teacher's requirements are as follows 1. Find a web page News link: https://sports.sina.com.cn sina sports sina sports sina sports Forever god!!!!! Why did you choose a certain wave web page? Of course, it is the result of many attempts, which made you climb many web pages, but many of them either have problem ...

[TOC]In the development process, a large number of JavaBean s are usually defined, and then the constructor, getter, setter, equals, hashcode and toString methods of their properties are generated through the IDE. When adding properties or changing a property, such as naming and type, these methods mentioned above need to be regenerated. Such r ...

The new features of Java 8 are mainly Lambda expressions and streams. When streams and Lambda expressions are used together, the characteristics of stream declarative processing of data sets can make the code concise and easy to readHow to simplify the codeIf there is a demand, you need to process the dishes queried in the database:Select dishe ...

background Download address: https://rrc.cvc.uab.es/?ch=4&com=downloads Note: this data is open source data, but you need to register an account. You can download it simply by registering; Introduction: it is used for text detection task. The data includes 1000 training samples and 500 test samples; Required data display Firstly, the d ...

[exercise 1] output "Hello, World!" 0. Title: Output "Hello, World!"1. Analysis: Use printf() to output "Hello, World!".2. Procedure: #include <stdio.h> int main() { printf("Hello, World!"); // Double quotes are required before and after the string in printf() return 0; } 3. Input and output: ...